Lock



J. JUNKUNC Aug. 24, 1937.

LOCK

Filed Sept. 9, 1935 3 Sheets-Sheet l 4 EVEN SF /0///v L/U/VA u/vc.

% f a 4 ,4 E.

Aug. 24, 1937. I J N 2,090,631

. LOCK Filed Sept. 9, 1933 3 Sheets-Sheet 2 1 AKEE mm wmmmm .TZF'E 25? JOHN /a/vlez/A/c.

Q.- Qua/w Aug. 24, 1937. J. JUNKUNC 2,090,631

LOCK

Filed Sept. 9, 1953 3 Sheets-Sheet 5 & J2EE.

Patented Aug. 24, 1937 UNITED STATES PATENT OFFICE LOCK John Junkunc, Chicago, Ill.

Application September 9, 1933, Serial No. 688,712

15 Claims.

The present invention relates to improvements in locks, and is more particularly concerned with locks of the permutation type, and although the invention is illustrated as being embodied in a padlock, it will be apparentthat the invention may, with equal facility, be utilized in other types of locks.

It has heretofore been customary to provide in padlocks and the locks of lockers or the like,

permutation means which enabled the lock to be operated by anyone cognizant of the predetermined combination for any particular lock. Particularly, where locks of this type are used in connection with a plurality of lockers, it is not uncommon for someone having a locker to forget the combination for the lock thereon. Under such circumstances, the user of the locker cannot open the same or must find out the locker number from the janitor or other person having a record of the various combinations for the lockers, the custodian being put to the trouble of having to look through the records in order to ascertain the specific combination for the particular lock, the combination of which has been forgotten.

To the end that the locker may be opened without the necessity of having to look up the combination in the records, the locks are provided with key means in addition to the combination 0 mechanism, which enable the janitor or custodian to open any of the combination locks by means of a master key. Such an arrangement is not only convenient but saves a great deal of time both for the custodian and the user of the locker.

: 5 It is a primary object of the hereinafter described invention to provide means for operating a permutation look by the use of a key.

It is a further object of the invention to provide a lock having a permutation mechanism for so operating the lock, and key means for operating the lock independently of the permutation mechanism.

Another object is to provide an improved padlock which may be selectively operated by dialing a predetermined combination or by means of a key.

Still another object of the invention is to provide in a permutation lock, simple means for varying the lock combination.

to In accordance with the general features of the invention, it is proposed to provide a locking bolt which carries a latch which will operate to connect the bolt for unitary movement with a plurality of tumbler discs, when these discs are .55 moved to predetermined positions during the combination. For this purpose, the digitally op-' erable member for turning the dial and actuating the tumbler discs of the permutation mechanism is carried through a central opening of the dial plate. The edge of the dial plate defining this opening is provided with a plurality of equally spaced teeth or projections. The digitallyv operable member is provided with one or more projecting teeth or lugs which are so spaced that, when the parts are assembled, the teethon the digitally operable member will fit into a corresponding number of the spaces between the teeth of the dial plate, thereby locking them together for unitary movement. To change the combination of the lock it is only necessary to shift the dial plate to a new position and interlock the digital member and plate by inserting the teeth of the member in the spaces between the teeth at the new position of the dial plate. With this arrangement a relatively large number of com binations are readily available. e

Other objects and features of this invention will more fully appear from the following detail description, taken in connection with the accompanying drawings, which illustrate a single embodiment thereof, and in whicha Figure 1 is a plan view of the face side of a padlock embodying the features of this invention; the lock being shown inlocked position;

Figure 2 is a similar View except that the lock is shown in unlocked position;

Figure 3 is an enlarged view of the lock with the shackle in locked position, the dial plate and the digitally operable member being removed to disclose the permutation locking mechanism;

Figure 4 is an enlarged diametrical section through the lock, taken substantially on line IV-IV of Figure 3;

Figure 5 is an enlarged fragmentary view with a section taken through the rear portion of the lock body to show the operative relationship of certain parts of the locking mechanism, taken substantially on line VV of Figure 4;

V Figure 9 is a horizontal section through the 15 lock body taken substantially on line IX-IX of V Figure 8;

' Figure 10 is a detail view insection showing the tumbler discs in assembled relationship;

Figures 11, 12 and 13 are sections taken through 2 the tumbler disc assembly respectively on lines.

XIXI, XlL-XII, and XIIIXIII, to show con- 7 structional' details of the discs;

Figure 14 is a detail plan View looking at the rear face of the lock dial plate.

25 Figure 15 is a plan view of the lock body with the lo'cking partsand shackle removed;

Figure 16 is an inverted isometric detail view of the locking bolt and associated cam bar; and

Figure 17 is a sectional view with parts in ele- 30 vation and in general being similar to- Figure 8 to show the cooperative relationship of the shackle and locking bolt, when the bolt is in unlocked position, taken substantially on line XVIIXVII or Figure'6. 35 As shown on. the drawings:

In the illustrated embodiment of this invention, a padlockis shown in Figure 1 having a body l forenclosing the operating instrumentalities of the lock, and a shackle l6 supported for movement into locked and unlocked positions relative to the lock body. The lock body |5 maybe constructed in any preferred manner, however, the body has been illustrated as comprising a circular cup-shaped 45 portion having a solid back wall I! and side wall |8. The lock body may be formed of bronze or any preferred type of non-corrosive metal. v The shackle 16 associated with the lock body embodies a bowed portion l9 terminating in parallel major andminor shank portions 20 and 2| respectively, and. is of the sliding and swinging type, adapted to have sliding movement in the lock body I5 and when moved to its open positionas shown in Figure 2 is capable of being rotated about the major shank portion 20 as'a',

pivot. The major orlong er cylindrical shank portion 20 slidably and rotatably extendsinto the lock body through an opening 22 in the side wall N3 of the body. The lower endof the shank 60 20 is controlled in its movement by a guide 23 which may be integrally formed with the lock body. Arrangedwithin the lock body is an expansion spring 24 one'end of which acts upon a wall 25 formed by the body wall l5 and the guide "65 member '23 and the upper end of which acts upon the inner end of the shank 20in a manner whereby the spring normallyacts to urge the shackle toits extended position. The inner end of the V shackle 20 is provided with a notch 26 on its 7 V inner side which communicates at one'end with a circumferentially extending groove 21. A pin 28 extends through theno-tch 26 to limit'the movement of the shackle in sucha manner that when the pin is atthejuncture of notch 26 and groove2L'the shackle may be rotated about the in locked position relative to the lock body.

The locking bolt 32 is segmental in shape and is cast or otherwise formed of suitable metal. The bolt comprises a plate portion 33 having integrally formed therewith a central rib 34 which is provided with a plain face 35. The outer 1 .edge 36 of the bolt is in sliding engagement with the inner surface of the wall l8 of the lock body, whereby the movement of the bolt to locked and unlocked position is guided by the wall of the lock body.

The end of the locking bolt, which cooperates with the shank portions of the shackle to lock the shackle relative to the lock body, is pro vided with spaced flanges 31 and 38 which. are moved into andout of the grooves and 3| respectively as the bolt is moved to locked'and unlocked position. For supporting the bolt for sliding movement in a plane parallel to the rear 7 wall of the lock body, the guide 23 carries a segmental outwardly extending flange portion 39, and there is provided on the opposite side of the lock body a bracket 40 which is provided with a segmental shoulder 4|, the flange 39 and shoulder 4| being in sliding engagementwith the undersurface of the inner margin of the plate portion 33 of the bolt. The outer edge of the shoulder 4| is disposed to be in alignment with a se'g'e mental wall portion 42 of the bracket 40, this wall portion 42 being inwardly spaced from the wall of the lock body and cooperating therewith to form an arcuate chamber 43 to receive, the

other end of the bolt, which cooperates with both the permutation locking mechanism and the key operating mechanism of the look. A coil expansion spring 44 normally actuates the bolt in a counterclockwisedirection to locked position, one end of this spring bearing against an end of the bolt and the other end bearing against a portion of the guide member 23. Movement of the bolt in a counterclockwise direction is limited by the abutment of a shoulder 45 on the bo'ltwith an end wall 46 of the arcuate channel 43.

I The permutation or combination mechanism for operating the lock comprises a series of three tumbler discs 41, 48 and 49 which aremounted for free rotation within confronting arcuate wall portions of the guide member 23 and .bracket 40,

and in the peripheral edges with similarly formed notches or recesses 53 as clearly illustrated in Figures 11,12 and 13. The tumbler discs are separated from one another by intervening washers 54 for allowing free and independent rotation of the tumbler discs. Eachwasher is provided with V a projection 55 which extends into a slot 56 disposed between the wall portions and 5|, whereby the washers are retained or anchored against rotational movement. Opposite theprojection each washer is provided with an open portion 56 defining spaced ends, the purpose of which'will be subsequently evident.

Rotatalbly mounted and projecting from the. forward face of the lock body is a digitally opershaped channel :23.

supported upon a spindle 59 which may be integrally formed with the rear surface of the lock body. The member is additionally supported in axial alignment with the lock body by anintermediate portion 66 having its outer surface in engagement with the wall portions 50 and 5|, and defining a shoulder 5! which extends outwardly over thetiunbler discs to retain the discs in operative position and form in effect a master disc having 2.. lug or projection 52 which extends into a segmental opening ii? ofthe disc ll. Adjacent the shoulder El there is formed a circumferentially extending groove 64 which communicates with a, socket 65 in the bracket il, this socket being adapted to receive a pin 66 which extends into the circumferential groove to retain the digitally operable member against removal from its operative position.

Surrounding the intermediate portion til is a ring-shaped dial plate S'l having its inner periphery provided with a plurality of cut-out portions 68 which define circumferentially spaced teeth 69. The dial plate is interlocked with the digitally operable member 57 by means of a projection l6 thereon which is adapted to fit into one of the spaces 58. On the rear face or the dial there is provided a spring actuated ball H which is adapted to seat between the spaced teeth 89 as the dial plate is moved for the purpose of latching the dial in its movement from. one space to another. The outer periphery of the dial extends into a circumferentially recessed portion E2 in the wall E8 of the lock body. A washer i3 is disposed between the rib 34 of the locking bolt and the dial r plate 67, so that the bolt and dial may be relatively moved without interference, and to prevent access to the interior mechanism.

Referring to Figures 1 and 2, the dial plate 6! may be provided with letters or numerals for coacting with a suitable marker provided on the face side of the lock casing. Projecting laterally from the front face of the innermost tumbler disc and from the front and rear faces of the disc 48 are suitable pins or studs M which coact with 7 each other and with the projection 52 of the master disc upon proper rotation of the dial plate 5'! in such a manner as to bring the tumbler disc notches 53 in aligned relationship longitudinally of the axes of the discs. In addition to aligning the notches 53 of the tumbler discs, a notch 15 on the master disc is also brought into alignment.

The coupling between the tumbler discs, master disc and the locking bolt is accomplished through an opening it in the side of the arc- At the associated end of the locking bolt, 2. spring actuated latch ll is mounted for movement in a direction radially of the lock body. The latch member ii is normally moved toward the .tumbler discs by means of an expansion coil spring '56 having one end bearing against the locking bolt body and its other end bearing against the latch member. The innermost edge of the latch member ll is provided with a projecting portion H for cooperating with the disc tumblers ll, Q8 and 49 and an offset portion 86 for cooperating with the master disc. When the tumbler discs ll. 48 and 49 have their notches 53 in alignment in the proper position relative to the latch '51, the edge portion Hi thereof is projected by the spring 78 into the aligned notches 53 thereof. Further movement of the digitally operable member 5'! in the proper direc tion brings the notch 75 thereof into alignment and the latch plate edge 85 is projected into this notch, the locking bolt thereby being latched for unitary movement with the digitally operable member 5? which may then be moved in a clockwise direction to operate the locking bolt to unlocked position relative to the shackle l5.

For disengaging the latch ll, when the locking bolt has been moved to unlocked position and the shackle released, the bolt on its rear surface carries a cam bar 8i which is mounted for sliding movement in the direction of its longitudinal axis. This bar is retained and guided by lateral lugs 8283 on opposite sides of an end margin 84 thereof, a shoulder 85 on a projecting support 86 for the latch, and a segmental flange 85 integrally formed with the bolt. Longitudinal movement of the cam bar is limited by an abutment shoulder 8'! disposed to engage the lug 82, when the bar is moved in a counterclockwise direction as viewed in Figure 5, and an abutment shoulder 88 on the bar which is disposed to engage the lug 83 when the bar is moved in the other direction. The longitudinal movement of the cam bar is slightly resisted by the braking action of a spring 83" which is retained in a lateral notch 84 in the cam bar, the outer end of the spring bearing against the flange 86 The end 89 of the cam bar is provided with a cam surface Ell which is engaged by a projection 9! which forms a part of the latch plate TI and is held against the cam surface 9H by the action of the spring 78.

The bar 88 is of such length that when the locking bolt is in locked position, the end 38 projocts past the associated end of the bolt, and the cam surface is in such position that the latch plate l? may enter the notches 53 of the tumbler discs and the notch T5 of the master tumbler disc, when they are properly aligned. Now, when the bolt is moved in a counterclockwise direction as viewed in Figure 5 to unlocked position, the shackle is first released and thereafter the end 89 of the cam bar abutsa shoulder 92 defined by a portion of the guide member 23, whereby the cam bar is moved in a clockwise direction relative to the locking bolt. This action causes the cam surface 98 to retract the latch bar T! to release the bolt from the tumbler discs. As soon as the bolt is released, the expansion spring 4-3 will tend to move the bolt towards locked position. It will be observed that in the unlocked position of the bolt, the end so, by reason of the movement of the cam bar in a clockwise direction, will project beyond its support. If the shackle is now returned to locking position the bolt will move to locked position so that during this movement of the locking bar to locked position, the end 84 abuts the shoulder 46 to cause amovement of the cam bar in a counterclockwise direction relative to the bolt. At this time, the projection 9! does not engage the cam surface 9!! for the reason that the projecting edge E8 of the latch bar is now disposed in such a position relative to the tumbler discs, that the latch plate will engage the periphery of the tumbler discs until such time as the notches 53 and 15 are again aligned.

The independent key operating mechanism includes a key cylinder 53 which is mounted within the digitally operable member 5'! for rotative movement relative thereto. The innermost end of the key cylinder is provided with a semi-circular peripheral fiange 94 which coacts with a shorter segmental flange 95 to limit the rotational movement of the key cylinder when actuating the same from locked to unlocked position.

he key'cylinder carries a plurality of spring actuated tumbler pins or blades 96 of the usual 'defining ,a cam surface I00.

construction, which are adapted in locked position to extend into lateral grooves 91 and 98 formed on th-e interior surface of the cylindrical digitally operable member 5?. These tumblers are arranged to be retracted when a proper key 93 is inserted into the key cylinder.

Adjacent the innermost end of the key cylin- V der there is provided a groove 99 which circumferentially extends a portion of the'distance around the key cylinder and'embodies a bottom ml is supported in thewall of the portion 60 the digitally operable member for radial longitudinal movement therethrough. This tumbler plate carries a projection I02 at its inner end which extends into the groove 99 and engages the cam bottom surface i60 thereof. Thus it will be apparent that, as the key cylinder is rotated to unlocked position, as best shown in Figure'fi, the deeper portion of the groove 99 is moved to the tumbler plate and the tumbler plate is then free to move inwardly toward the axis of the key cylinder.

In orderto couple the locking bolt to the digi tally operable member, which may be actuated through the pin or blade tumbler mechanism by the key 98, the locking bolt carries a dog which is supported for radial movement relative to the cylinder is in locked position, the outer edge of the tumbler plate 10! is flush with the outer surface of the digitally operable member at. this point and the projecting portion I04 is thereby prevented from engaging the digitally operable member, 7

'In the operation of the lock of this invention,

" assuming first that it is desired to open the look by means of the permutation mechanism, the lock being-in locked position as shown in Figure 1,

the dial plate 61 is first rotated predetermined distances in opposite directions for so rotating the tumbler discs as to bring all of the notches 53 intojalignment and at a location to permit the spring '18 to initially force the edge 19 of the latch I? into the notches; The dial is then moved in such directionthat the notch" is brought 7 into alignment, whereupon the ,edge portion 80 of the latch engages in the notch 15.and' the projecting edge is moves still further into the notches 53. a The locking bolt is now coupled to r the digitally operable member 51 and by' moving in the proper direction will actuate the locking bolt to unlocked position, thereby causing the V fianges3'l and to be moved out of the arcuate grooves 30 3!:

The shackle I6 now being released, it will be forced to unlocked position relative to the lock body by means of the expansion coil spring. 25. Since this action carries the grooves Eli and 3! out of registration with the flanges 31 and 38, the locking bolt must remain in unlocked position as shown in Figure 17 until the shackle is again moved back to locked posi 7 tion. Continued movement of the digitally operable member 5'! in the same direction as'it was moved'in actuating the locking bolt to unlocked position will bring theycam surface 90 into such A tumbler plate position as to retract the latch plate 11- to release the coupling between the locking bolt and the digitally operable member, whereby the locking bolt will therefore be free to be automatv ically returned to locked position by means of the expansion spring 44, as soon as the shackle is moved back to lock-ed position relative to the lock body. Any further movement of thedigital 7 1y operable member in either direction after the latch plate Tl is retracted will cause the notches 53 to be moved out of alignment. 7 7

Considering now that. thelockshackle is in locked position relative to the lock body and 7 that it is desired to open the lock by means of the key mechanism. It will be observed that in locked position of the lock, the latch plate IT is.

projecting portion I04 of the dog to follow the' tumbler plate and latchingly couple the locking bolt to the digitally operable member and key cylinder. cylinder, digitally operable member and locking bolt causes'the bolt to be moved to unlocked position, whereupon the shackle is released and will automatically move to unlocked position relative to the lock body as before. In orderrto remove Further rotation of the keythe key SSfrom the lock, the lock cylinder must I rotated to its locked position. This causes the tumbler plate to be moved outwardly by the action of the cam surface I00 and the dog I03 is thereby released from its connection with the digitally operablemember 51. Also, the release of this dog permits free movement of the locking bolt towards locked position by virtue of the action of the expansioncoil spring 44.

Should it be desired at any time to change the combinationof the permutation locking mechanism, it is only necessaryto remove the locking pin Eli'which releases the digitally operable memher so that it may be withdrawn from the lock body'together with the dialing plate ,6! carried thereby. In order to change the combination the dialing plate is shifted relative to the digitally. operable member 57 and the projection 10 thereon is inserted in one of the other spaces between two of the teeth 59. The digltally operable mem-' her is then put back in the lock body and the pin a 66 re-inserted. It will therefore be apparent that due to this shifting of the dial plate relative to the digitally operable member, a different numeral on the dial plate will coact with the marking on the lock body, when the notches 53 and E5 of the to be thus limited but only insofar as defined by a the scope and spirit of the appended claims.

. I claim as my invention: i

1. A look comprising a g body,

and having a dial, a rotatable key cylinder within said member, a-locking bolt, a plurality of tumbler, discs rotatable with said member, latch meansto interconnect said discs and bolt, when the discs" are moved to predetermined positions and the key digitally operable member rotatably mounted in said bodycylinder is in locked position, a plurality. of tumblers to lock said member and key cylinder against relative movement, when the key is removed and enable limited relative movement when the key is in the key cylinder, means responsive to the movement of the key cylinder to unlocked position to connect said bolt and member for unitary movement, whereby the bolt may be actuated by the key irrespective of the positions occupied by the; tumbler discs;

2. A look comprising a body, a digitally operable member rotatably mounted in said body and having a dial, a key cylinder rotatable within said member and having a cam surface, a lock ing bolt, a plurality of tumbler discs rotatable with said member, latch means to interconnect said discs and bolt, when the discs are moved to predetermined positions and thekey cylinder is in locked position, a plurality of tumblers to lock said member and key cylinder against relative movement when the key is removed and enable limited relative movement when the key is in the key cylinder, a dog controlled by said cam surface to connect the member and bolt for unitary movement when the cylinder is moved to unlocked position relative to said member, whereby the bolt may be actuated by the key irrespective. of the positions occupied by the tumbler discs.

3. A look comprising a. body, a locking bolt in said body, a digitally operable member rotatably mounted in said body and having a dial, a plurality of tumbler discs rotatable with said member, a latch carried by said bolt operative to connect the discs and bolt for unitary movement, when the discs occupy predetermined positions, a rotatable key cylinder within said member, a tumbler to lock said cylinder and member against relative movement when the key is removed and enable limited relative movement when the key is in the key cylinder, and a. dog carried by said bolt operative in response to the movement of the key cylinder to unlocked position to connect said member and bolt for unitary movement, whereby the bolt may be actuated irrespective of the positions occupied by said discs.

4. A look of the character described comprising a lock body, an arcuate bolt mounted in said body for longitudinal movement, a dog carried by said bolt, a cylindrical member mounted for rotational movement about the center of movement of said bolt, a key cylinder within said member mounted for limited rotational movement relative thereto, a cam surface associated with said key cylinder, a radially extending tumbler plate carried by said member and movable outwardly and inwardly by the action of the cam when the key is moved to locked and unlocked positions respectively, said dog being moved in response to the movement of the tumbler plate and adapted to engage the cylindrical member for unitary movement therewith, when the tumbler plate is moved inwardly, and disengage the same, when the plate is moved outwardly.

5. A look comprising a locking bolt, a first looking mechanism, a first connecting means movable to interconnect said first locking mechanism with said bolt, a second locking mechanism, a second connecting means movable to interconnect said second locking mechansm with said bolt, and means to selectively control the movement of one of said connecting means into connected relation with its associated locking mechanism while 75 maintaining the other of said connecting means in disconnected relation with its associated looking mechanism.

6. A look comprising a first locking mechanism offlthe permutation type, a second locking mechanism of the key-operated tumbler type, a locking bolt, means to selectively connect said bolt with one or the other of said locking mechanisms for movement of the bolt by the selectedlocking mechanism, said means comprising a first latch movable to connect said bolt with said first looking mechanism, a second latch movable to connect said bolt with said second locking mechanism, and means to selectively control the movement of one of said. latches into connecting relation while maintaining the other latch in disconnected relation.

'7. A' lock comprising a first locking mechanism of the permutation type, a second locking mechanism" of the key-operated tumbler type, a locking bolt, means to connect saidbolt with one or the other of said locking mechanisms for movement of the bolt by the selected locking mechanism, said means comprising a digitably operable member and latch means movable therewith to selectively connect one of said locking mechanisms into latched relation with said bolt while maintaining the other of said locking mechanisms in unlatched relation with said bolt.

8. A look comprising a casing, a locking bolt, a permutation locking mechanism including a dialing member, key-actuated means associated with said member, a latch carried by said bolt operable to enable the actuation of said bolt through said permutation mechanism by means of the dialing member, and a dog carried by said bolt operable in response to the movement of the key to unlocked position to interconnect the bolt and dialing member, whereby the bolt may be actuated thereby, said dog being rendered inoperative, when the key is in locked position.

9. A look comprising a permutation locking mechanism including a digitably operable member, a locking bolt operable by said mechanism, a spring actuated dog carried by said bolt adapted to connect the bolt to the digitably operable member, and key-actuated means for controlling the action of said dog, said means including a cam actuated member responsive to the movement of the key to locked and unlocked positions to move said dog to efiective and ineffective positions relative to said digitably operable member.

10. A lock comprising a permutation locking mechanism including a digitably operable member, a locking bolt operable by said mechanism, a spring actuated dog carried by said bolt adapted to connect the bolt to the digitably operable member, and key-actuated means for controlling the action of said dog, said means including a member responsive to the movement of the key to locked and unlocked positions and operative to move said dog to effective and ineffective positions relative to said digitably operable member.

11. A look comprising a locking bolt, a latch carried by said bolt, and a permutation locking mechanism for actuating said bolt, said mechanism including a plurality of tumblers operable, when aligned in a predetermined manner, to be connected to the bolt by said latch, whereby said bolt may be actuated to unlocked position, and means including a member carried by said bolt to release said latch relative to said tumblers, when the bolt has been actuated to unlocked position.

12. A look comprising a locking bolt, a latch carried by said bolt, and a permutation locking -mechanism for actuating said bolt, said mechanism including a plurality of tumblers operable,

when aligned in a predetermined manner, to be connected to the boltby said' latch, and means including a cam carried by said'bolt operative to release said latch relative to said tumblers when the bolt has been actuated to unlocked position.

13.'A lock comprising a locking bolt, a latch carried by said bolt, and a permutation locking said; latch relative to said tumblers, when its movement is opposite that of said bolt. 7 ;14.,A lock comprising a locking bolt, a spring pushed latch carried by said bolt, and a permutation-locking mechanism for actuating said bolt, said mechanism including a plurality of tumblers operable, when aligned in a predetermined man: ner, and a member carried by said'bolt having a cam surface operative in response to the move ment of said bolt to actuate said latch to latched and unlatched positions relative to said tumblers.

'15. In a lock, a'locking bolt, a pair of latch members carried by said bolt, a permutation lockaligned in a predetermined manner, to be con' ing mechanism including a digitably operable member, a plurality of tumblers operable, when,

nected to the bolt by one of said latch members, i

whereby the bolt may be actuated by the digitably operable member, key-actuated means for controlling the connection of the digitably operable member directly to the bolt by the other latch (T5 member, whereby the bolt may be actuated by the digitably operable member without the necessity of having to align said tumblers.

JOHN JUNKUNC, 20 

